Carrier R-410A Air Conditioner User Manual
Contents
1. Fig 22 Fan Motor Mounting FAN HOUSING AIR DISCHARGE CUTOFF PLATE FAN WHEEL Fig 23 Fan Rotation Fan Pulley Alignment Align as follows 1 Loosen setscrews on pulleys 2 Align pulleys visually and tighten setscrews on fan pulley to lock it in place 3 Use the methods shown in Fig 24 to check proper pulley alignment 4 If pulleys are not in correct alignment loosen the motor holddown bolts and slide the motor axially until the pulleys are aligned 5 Tighten motor holddown bolts Pulley and Drive Adjustment To obtain desired fan speed refer to the fan motor and drive data in Tables 8A 11D and adjust fan motor pulley as follows 1 Remove belt from fan motor pulley after loosening motor from motor base 2 Loosen setscrew in moveable flange of pulley Screw moveable flange toward fixed flange to increase the fan speed and away from fixed flange to reduce speed Before tightening setscrew make certain that setscrew is over nearest flat surface of pulley hub Fig 24 A CAUTION UNIT OPERATION HAZARD Failure to follow this caution could cause equipment damage Increasing fan speed produces a greater load on motor Do not exceed rated capacity of motor Condensate Drains Keep condensate drains free of dirt and foreign matter Return Air Filters Refer to Replacing Filters section for filter accessibility and removal Replace with clean filters of the sizes listed i2. 2 11 4 16 x 20 x 2 4 16 x 24 x 2 13 33 1 10 13 33 30 30 1050 1062 325 2 18 10 000 12 000 7 500 12 500 9 000 15 000 7 5 10 0 7 5 10 0 1745 1745 1755 1755 R 410A 4 5 5 0 Enhanced Copper Tubes Aluminum Sine Wave Fins 450 24 86 29 83 2 2 20 24 Face 50 50 15 15 2 13 2 13 2 5 g 1 21 2 1 1 2 1 2 1 2 1 11 4 ODM 1 IDF Throwaway Factory Supplied 4 20x 24 x 2 4 20x 25 x2 Either Side 20 15 0 15 0 1 10 1 10 150 15 0 15 0 2 12 5 2 12 5 2 8 5 13 9 1 85 Table 1B 40RUA Physical Data Sl Cooling Units UNIT 40RUA NOMINAL CAPACITY kW OPERATING WEIGHT kg Base Unit with TXV Plenum FANS Qty Diam mm Nominal Airflow L s Airflow Range L s Nominal Motor kW Standard Motor 208 230 3 60 and 460 3 60 575 3 60 Motor Speed r s 208 230 3 60 and 460 3 60 575 3 60 REFRIGERANT Operating charge kg approx per circuit T DIRECT EXPANSION COIL Max Working Pressure kPag Face Area sq m No of Splits No of Circuits per Split Split Type Percentage Fins m PIPING CONNECTIONS Quantity Size in DX Coil Suction ODF DX Coil Liquid Refrigerant ODF Steam Coil In MPT Steam Coil Out MPT Hot Water Coil In MPT Hot Water Coil Out MPT Condensate PVC FILTERS Quantity Size mm Access Location STEAM COIL Max Working Pressure kPag at 126 C Total Face Area sq m Rows Fin
3. 2 Typ TYP 2 PLACES DIS 1 ALTERNATE ENTRANCE SCH FOR POWER i j ALTERNATE WIRING FILTER ALTERNATE x ACCESS MOTOR BELT ACCESS 8 ALTERNATE Pd DRAIN LOCATION EI RETURN AIR i i i INTAKE ALTERNATE i 4 ere lt ENTRANCE l FOR COIL CONNECTIONS RETURN _ AIR MS lt o 2 11 16 lo 627 11 uel Fe A Lf i CONDENSATE DRAIN Ss Ta 85 0 0 3 1 8 7 8 3 4 79 41 2355 e lt _ 2 8 5 8 Le 8 3 H 828 7 2514 6 LEFT SIDE FRONT ACCESS FOR CONTROLS MOTOR amp BELT CONTROL BOX t LEGEND F Fe EE i TXV Thermostatic Expansion Valve e hone EE GEES Dimensions in are in millimeters mE 2 gt Direction of airflow Du 3 Recommended clearance r E i ing Rear 3 in 76 mm z Front 2 ft 6 in 762 mm TA DIA FOR LIQUID CONNECTION x ge lI oed gs d Right Side 2 ft 6 in 762 mm 2783 DIA FOR SUCTION CONNECTION 1296 9 Left Side 2 ft 6 in 762 mm 3 4 9 16 T2 87 DIA FOR TXV BULB CONNECTION Local codes or jurisdiction may 1030 21 prevail 4 Liquid piping not supplied by Carrier gt 5 Duct flange is factory supplied and field installed RETURN AIR S Ges N Am pane a 1718 SALA 2 6 40RUS may require alternate or additional 280 9 357 11 407 91 S field favricated poping access holes Y if Jo t i Y Y LN 1 8 ALTERNATE 28 61 RETURN AIR 1 3 4 DIA FOR SUCTION CONNECTION UNIT WEIGHT 44
4. CIRCUIT FITTINGS REQUIREDt Lower Lower Upper Upper Lower Lower Upper Upper in 11 g Street Elbow is Nipple 75 L 11 g Long Radius Elbow 5 g Street Elbow 5 g Nipple 61 2 L Bis Long Radius Elbow 5 g Street Elbow 5 g Nipple 91 2 L 5 a Long Radius Elbow 11 g Nipple 55 5 L 11 Long Radius Elbow 11 g Nipple 11 L 11 Long Radius Elbow 13 g Long Radius Elbow 13 g Nipple 33 4 L 13 g Long Radius Elbow 13 g Long Radius Elbow 13 g Nipple 33 g L 13 g Long Radius Elbow 13 g Long Radius Elbow 13 Nipple 7 L 13 g Long Radius Elbow 13 g Long Radius Elbow 13 5 Nipple 113 4 L 13 g Long Radius Elbow Table 3 Fitting Requirement cont ACCESS UNIT HOLE NO 40RUA28 40RUS 28 30 40RUA 30 t See Fig 7 for access hole location by number T Fittings are listed in order from header or tee stub connection out to access hole in corner support post CONNECTION TYPE Suction Liquid Liquid Suction Supply Return Return Supply Suction Liquid Liquid Suction CIRCUIT Lower Lower Upper Upper Lower Lower Upper Upper Lower Lower Upper Upper FITTINGS REQUIREDt in 13 g Street Elbow 13 g Nipple 11 L 13 Long Radius Elbow 5 g Street Elbow 5 g Nipple 11 5 L 5 g Long Radius Elbow 5 g Street Elbow 5 5 Nipple 191 5 L 5 Long Radius Elbow 13 Nipple 43 46 L 13 g Long Radius Elbow 13 5 Nipple 231 4 L 13 g Long Radius El
5. Maximum Overcurrent Protection Motors are designed for satisfactory operation within 10 of nominal voltages shown Voltages should not exceed the limits shown in the Voltage Limits column NOTES 1 2 3 Voltage Imbalance 100 x Minimum circuit amps MCA and MOCP values are calculated in accor dance with NEC National Electrical Code Article 440 Motor FLA values are established in accordance with UL Underwriters Laboratories Standard 1995 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percentage of voltage imbalance max voltage deviation from average voltage average voltage EXAMPLE Supply voltage is 400 3 50 AB 393v BC 403v AC 396 v 393 403 396 192 3 897 Average Voltage 18 Determine maximum deviation from average voltage AB 397 393 4v BC 403 397 6v AC 397 396 1v Maximum deviation is 6 v Determine percent voltage imbalance Voltage Imbalance 100 x 3 1 596 This amount of phase imbalance is satisfactory because it is below the maxi mum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 296 contact your local electric utility company immediately PIED E w POWER _ _ HTRI SUPPLY E 3 Ph EQUIP ew CIRCUIT BREAKER E E a L li HP AND LARGER t 40RU TERMINAL
6. S Chilled Water Coil Refrigerant Options A None B Steam Coil C Hot Water Coil Nominal Tonnage 25 20 Tons 28 25 Tons 30 30 Tons Not Used A Place Holder Indoor Fan Options 1 Fan Drive and Motor Low Motor Efficiency Standard 2 Fan Drive and Motor Med Motor Efficiency Standard 3 Fan Drive and Motor High Motor Efficiency Standard 4 Fan Drive and Motor Low Motor Efficiency Premium 5 Fan Drive and Motor Med Motor Efficiency Premium 6 Fan Drive and Motor High Motor Efficiency Premium Brand Packaging 0 Standard Not Used A Place Holder Service Options 0 Non Painted Cabinet 1 Painted Cabinet Not Used A Place Holder Not Used 0 Place Holder Design Rev Catalog Model Number Voltage 1 575 3 60 5 208 230 3 60 6 460 3 60 Coil Options A Al Cu Fig 3 Model Number Nomenclature POSITION NUMBER 1 2 3 4 5 6 7 8 9 10 TYPICAL 4 8 0 8 G 1 2 3 4 5 POSITION DESIGNATES 1 2 Week of manufacture fiscal calendar 3 4 Year of manufacture 08 2008 5 Manufacturing location G ETP Texas USA 6 10 Sequential number Fig 4 Serial Number Nomenclature Unit Positioning The unit can be mounted on the floor for vertical application with return air entering the face of the unit and supply air discharging ve
7. Steam Coil Out MPT Hot Water Coil In MPT Hot Water Coil Out MPT Condensate PVC FILTERS Quantity Size in Access Location STEAM COIL Max Working Pressure psig at 260 F Total Face Area sq ft Rows Fins in HOT WATER COIL Max Working Pressure psig Total Face Area sq ft Rows Fins in Water Volume gal ft LEGEND Field installed accessory only 30 30 1035 1042 325 2 15 2 18 8 000 10 000 12 000 6 000 10 000 7 500 12 500 9 000 15 000 5 0 7 5 10 0 5 0 7 5 10 0 1745 1745 1745 1745 1755 1755 Enhanced Copper Tubes Aluminum Sine Wave Fins 435 11 0 12 4 15 5 8 3 12 4 12 4 3 15 2 13 g ODM 2 21 3 ODM 2 21 3 ODM 2 13 g ODM 2 21 3 ODM 2 21 3 ODM 1 21 5 1 11 5 1 2 1 2 1 11 4 ODM 1 IDF Throwaway Factory Supplied 4 16 x 20 x 2 4 20 x 24 x 2 4 16 x 24 x 2 4 20 x 25 x 2 Either Side 20 13 33 15 0 15 0 1 10 1 10 1 10 150 13 33 15 0 15 0 2 8 5 2 12 5 2 12 5 13 9 14 3 1 1 1 90 Table 1D 40RUS Physical Data SI Chilled Water Units r 28 z UNIT 40RUS NOMINAL CAPACITY kW OPERATING WEIGHT kg Base Unit Plenum FANS Qty Diam mm Nominal Airflow L s Airflow Range L s Nominal Motor kW Standard Motor 208 230 3 60 and 460 3 60 575 3 60 Motor Speed r s 208 230 3 60 and 460 3 60 575 3 60 CHILLED WATER COIL Max Working Pressure kPag Face Area sq m Upper Face Area sq
8. o 10 Rpm Bhp Rpm Bhp Rpm Bhp Rem Bhp Rpm Bhp Rpm Bhp Rpm Bhp 3 40 4 27 5 32 6 62 8 24 3 96 4 76 6 05 7 64 9 52 4 82 6 41 8 36 10 71 13 54 See Legend and Notes on page 34 UNIT 40RUA 25 40RUS 25 40RUA 28 40RUS 28 40RUA 30 40RUS 30 Table 10C 40RU High Capacity Fan Performance Data 0 0 2 4 in wg External Static Pressure English cont EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm See Legend and Notes on page 34 32 40RUA 25 40RUS 25 40RUA 28 40RUS 28 40RUA 30 40RUS 30 See Legend and Notes on page 34 AIRFLOW UNIT Ls 40RUA 25 40RUS 25 40RUA 28 40RUS 28 40RUA 30 40RUS 30 See Legend and Notes on page 34 Table 10D 40RU High Capacity Fan Performance Data 0 600 kPa External Static Pressure SI EXTERNAL STATIC PRESSURE kPa unit aReow o s e o La IS us xw rs ww vs ww vs xw ve ew vs ww Table 10D 40RU High Capacity Fan Performance Data 0 600 kPa External Static Pressure SI cont EXTERNAL STATIC PRESSURE kPa 18 39 19 03 19 68 300 r s kW 15 12 2 54 15 78 3 18 16 50 3 96 17 32 4 94 18 26 6 14 13 40 2 95 14 04 3 55 14 80 4 51 15 58 570 16 38 7 10 13 95 3 59 14 79 4 78 15 66 6 23 16 61 7 98 17 65 10 10 33 Legend
9. BLOCK 1 FIELD POWER WIRING 40RU HEAT ACCESSORY T 9 e 8 9 3 3 s CONNECT TO 24VAC AT CONDENSING UNIT Fig 17 Unit Wiring 19 LEGEND EQUIP Equipment GND Ground HC Heating Contactor HTR Electric Heater IFC Indoor Fan Contactor IFM Indoor Fan Motor TB Terminal Block TSTAT Thermostat Factory Wiring Field Control Wiring NOTE Use copper conductors only Table 6 Fan Contactor Coil Data UNIT VOLTAGE HOLDING 40RU vac VA PEED n Connecting Ductwork Refer to the Carrier System Design Manual for the recommended design and layout of ductwork Fig 18 shows recommended duct connection to units with 2 fans A CAUTION UNIT OPERATION HAZARD Failure to follow this caution could cause equipment damage Do not operate unit without ductwork or discharge plenum unless fan speed has been adjusted for external static pressure of zero in wg Failure to do so may result in motor overload DISCHARGE CONNECTIONS Duct flanges are factory supplied they are shipped inside the unit attached to the hairpin end of the coil tube sheet for field installation Using the existing screws install the duct flanges on the unit s fan deck Each fan discharge requires 2 flanges each flange must be bent in the middle to conform to the discharge opening See Fig 19 After flanges are installed connect them to the supply duct using a canvas connecti
10. FOR TXV BULB CONNECTION 938 21 nae 2 5 1 16 o 183 1 1 9 3 16 531 11 P 1 1 1 16 1 2 1 16 484 1 RETURN AIR l RR 11 1 16 11 4 1 16 m g 280 9 401 9 1 GH l 1 1 1 1 8 ALTERNATE ECK RETURN AIR 1 3 4 DIA FOR SUCTION CONNECTION 44 5 1 1 8 DIA FOR LIQUID CONNECTION 44 5 RIGHT SIDE Fig 2A Dimensions Size 25 TXV Thermostatic Expansion Valve jw ls Dimensions in are in millimeter 2 Direction of airflow 3 Recommended clearance Rear 3 in 76 mm Front 2 ft 6 in 762 mm Right Side 2 ft 6 in 762 mm Left Side 2 ft 6 in 762 mm Local codes or jurisdiction may prevail S 4 Liquid piping not supplied by Carrier 5 Duct flange is factory supplied and field installed UNIT WEIGHT UNIT Ib kg 40RUA 25 730 331 40RUS 25 683 310 TOP ALTERNATE RETURN AIR INTAKE r CONTROL B0X x a r um ACCESS FOR CONTROLS uns MOTOR amp BELT ab d L 3 7 15 4 87 31 31 8 K 7 B 3 47 79 4 2355 3 1 9 9 16 1 9 9 16 1578 A 547 61 E 547 6 41 31 419 1 479 6 DUCT FLANGE DUCT FLANGE e SEE NOTE 5 lt 1
11. and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants and oils A CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing 40RU units A CAUTION UNIT OPERATION HAZARD Failure to follow this caution could cause equipment damage Ensure voltage listed on unit data plate agrees with electrical supply provided for the unit PRE INSTALLATION 1 The power supply v ph and Hz must correspond to that specified on unit rating plate 2 The electrical supply provided by the utility must be suf ficient to handle load imposed by this unit 3 Refer to Installation General section page 2 and Fig 2A and Fig 2B for locations of electrical inlets con densate drain duct connections and required clearances before setting unit in place 4 This installation must conform with local building codes and with the NEC National Electrical Code or ANSI American National Standards Institute NFPA National Fire Protection Association latest revision Refer to provincial and local plumbing or wastewater codes and other applicable local codes Moving and Storage To transfer unit from truck to storage site use a fork truck Do not stack units more than 2 high during storage If unit is to be stor
12. 40RU Packaged Air Handling Units 60 Hz with Puron R 410A Refrigerant Sizes 25 28 30 Turn to the Experts Installation Start Up and Service Instructions TABLE OF CONTENTS SAFETY CONSIDERATIONS 1 PRE INSTALLATION 0 2 0 6 5505s Re 2 Moving and Storage 2 Bigeing 34 44 Votasveeeavae echoes ehe DRE LAUS hee 2 INSTALLATION 05 ee eee eee eee ee 2 20 Genet EE 2 Uncratibg sv ee ro Eb SOR DI PE DRESD 2 ACCESSORIES EY Sy Sy a muta EO E SR REOS 2 Unit Positioning 9 Unit Isolation se tues cannes ERR ce bee da ER 11 Refrigerant and Chilled Water Piping Access 11 Refrigerant Piping 11 Chilled Water Piping 15 Condensate Drain 16 Fan Motors and Drives 16 Power Supply and Wiring 17 Connecting Ductwork 20 Return Air blterg 0 cece eee peiris 20 STARTUP EE 21 SERVICE tecuptanhedind sate SUP PENES IS 21 34 Panels MM T rp 21 Fan Motor Lubrication 21 Fan Shaft Bearings 21 Centering Fan Wheel 22 Fan Shaft Position Adjustment 22 Individual Fan Wheel Adjustment 22 Fan Belts cie RE ERI we EE 22 Fan Rotation ze SRL EEPUDFER UNE 22 Fan Pulley Alignmen
13. 5 UNIT el DIA FOR LIQUID CONNECTION Ib kg 40RUA 28 1050 477 RIGHT SIDE 40RUA 30 1062 482 40RUS 28 1035 469 40RUS 30 1042 473 Fig 2B Dimensions Sizes 28 and 30 Table 1A 40RUA Physical Data English Cooling Units UNIT 40RUA NOMINAL CAPACITY Tons OPERATING WEIGHT Ib Base Unit with TXV Plenum FANS Qty Diam in Nominal Airflow cfm Airflow Range cfm Nominal Motor Hp Standard Motor 208 230 3 60 and 460 3 60 575 3 60 Motor Speed rpm 208 230 3 60 and 460 3 60 575 3 60 REFRIGERANT Operating charge Ib approx per circuit t DIRECT EXPANSION COIL Max Working Pressure psig Face Area sq ft No of Splits No of Circuits per Split Split Type Percentage Fins in PIPING CONNECTIONS Quantity Size in DX Coil Suction ODF DX Coil Liquid Refrigerant ODF Steam Coil In MPT Steam Coil Out MPT Hot Water Coil In MPT Hot Water Coil Out MPT Condensate PVC FILTERS Quantity Size in Access Location STEAM COIL Max Working Pressure psig at 260 F Total Face Area sq ft Rows Fins in HOT WATER COILt Max Working Pressure psig Total Face Area sq ft Rows Fins in Water Volume gal ft3 LEGEND DX Direct Expansion TXV Thermostatic Expansion Valve t Units are shipped without refrigerant charge t Field installed accessory only 2 15 8 000 6 000 10 000 5 0 5 0 1745 1745 3 5 19 88 18 17
14. 53164 Max Allowable Speed r s 18 3 Change per 1 2 Turn of Moveable Motor Pulley 0 255 0 255 0 255 Flange EE EUM MAX FULL TURNS FROM CLOSED POSITION SHAFTS CENTER DISTANCE mm 232 279 169 240 169 240 t Four belts shipped with unit Use correct set of 2 belts sized according to the pully setting Table 9F High Static Drive Data 60 Hz SI UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 MOTOR DRIVE Motor Pulley Pitch Diameter mm ie ie e Pulley Factory Setting Full Turns Open 3 0 3 0 3 0 FAN DRIVE Pulley Pitch Dia mm 203 Pulley Bore mm 49 2 Belt No Section 2 B Belt Pitch mm 960 FAN SPEEDS r s Factory Setting 17 1 sane Bi ws wi Max Allowable Speed r s 18 3 Change per 1 2 Turn of Moveable Motor Pulley 0 323 0 278 0 278 Flange MAX FULL TURNS FROM 6 CLOSED POSITION SHAFTS CENTER DISTANCE mm 207 255 169 240 169 240 t Itis possible to adjust drive so that fan speed exceeds maximum allowable DO NOT exceed 20 r s 29 Table 10A 40RU Standard Fan Performance Data 0 0 2 4 in wg External Static Pressure English EXTERNAL STATIC PRESSURE in wg unr AIRELOWT oo J oz o x Cfm Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 3 60 40RUA 25 ce x 5 24 40RUS 25 SEN 8 08 3 60 4 45 40RUA 28 5 68 40RUS 28 7 14 8 86 12 73 4 70 6 05 40RUS 30 7 87 10 07 12 73 See Legend and Notes on pa
15. 8 THREADED ROD FIELD SUPPLIED RETURN AIR TYP 4 PLACES BRACKET FACTORY SUPPLIED FIELD INSTALLED TYP 4 PLACES STEEL CHANNEL FIELD SUPPLIED TYP 2 PLACES L 1 L T x oO oo O Be UNIT SIZES 28 20 SH e OVERHEAD SUSPENSION ACCESSORY WITH HOT WATER COIL 2679 71 NOTE Dimensions in are millimeters L 1 z z ra 9o 20 000 Jl DISCHARGE AIR i Lo C si i 3 8 THREADED ROD RETURN AIR FIELD SUPPLIED TYP 4 PLACES BRACKET FACTORY SUPPLIED FIELD INSTALLED TYP 4 PLACES J STEEL CHANNEL FIELD SUPPLIED TYP 2 PLACES z I H L z SE ii oQ 00 Q E O OVERHEAD SUSPENSION ACCESSORY WITH HOT WATER COIL Fig 6 Preferred Suspension Technique 10 Unit Isolation Where extremely quiet operation is The 40RU direct expansion units have internal essential install isolators between floor and base of unit or factory installed thermostatic expansion valves TXVs between ceiling and top section of unit distributors and nozzles for use with R 410A See Table 2 for part numbers Knockouts are provided in the unit corner posts for 40RU refrigerant piping See Fig 7 whic
16. Bore in 115 16 Belt No Section 2 B Belt Pitch in 37 8 FAN SPEEDS rpm Factory Setting 1118 1024 1024 1014 873 873 Range 12001 1075 1075 Max Allowable Speed rpm 1200 1100 1100 Change per 1 5 Turn of Moveable Motor Pulley 19 4 16 7 16 7 Flange MAX FULL TURNS FROM 6 CLOSED POSITION SHAFTS CENTER DISTANCE in E m oa t It is possible to adjust drive so that fan speed exceeds maximum allowable DO NOT exceed 1200 rpm Table 9D Standard Drive Data 60 Hz SI UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 MOTOR DRIVE Motor Pulley Pitch Diameter mm P ae e Pulley Factory Setting Full Turns Open 3 0 3 0 3 0 FAN DRIVE Pulley Bore mm 292 Belt No Section 2 Bt IIT um FAN SPEEDS r s Factory Setting 12 5 Fang TESEE Max Allowable Speed r s 18 3 Change per 1 Turn of Moveable Motor Pulley 0 255 0 218 0 218 Flange MAX FULL TURNS FROM 6 CLOSED POSITION SHAFTS CENTER DISTANCE mm 232 279 169 240 169 240 t Four belts shipped with unit Use correct set of 2 belts sized according to the pully setting 28 Table 9E Medium Static Drive Data 60 Hz SI UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS830 MOTOR DRIVE Motor Pulley Pitch Diameter mm d e 10e Pulley Factory Setting Full Turns Open 3 0 3 0 3 0 FAN DRIVE Pulley Pitch Dia mm 239 Pulley Bore mm 49 2 Belt No Section 2 Bt FAN SPEEDS r s Factory Setting 14 7 Range 3
17. ES FILTER DRIERS AND FUSIBLE PLUGS WITH A LEAK DETECTOR Y N LOCATE REPAIR AND REPORT ANY LEAKS HAVE ALL COMPRESSOR SERVICE VALVES BEEN FULLY OPENED BACKSEATED Y N ARE THE COMPRESSOR OIL SIGHT GLASSES SHOWING CORRECT LEVELS YN 40RUS HAS AIR BEEN BLED FROM SYSTEM Y N HAVE LEAK CHECKS BEEN MADE AT COMPRESSORS CHILLERS VALVES AND INDOOR COILS Y N LOCATE REPAIR AND REPORT ANY LEAKS CL 1 CHECK VOLTAGE IMBALANCE LINE TO LINE VOLTS AB V AC V BC v AB AC BC 3 AVERAGE VOLTAGE V MAXIMUM DEVIATION FROM AVERAGE VOLTAGE V VOLTAGE IMBALANCE 100 X MAX DEVIATION AVERAGE VOLTAGE 96 IF OVER 2 VOLTAGE IMBALANCE DO NOT ATTEMPT TO START SYSTEM CALL LOCAL POWER COMPANY FOR ASSISTANCE II START UP CHECK INDOOR FAN MOTOR SPEED AND RECORD AFTER AT LEAST 10 MINUTES RUNNING TIME RECORD THE FOLLOWING MEASUREMENTS COMP A1 COMP B1 OIL PRESSURE SUCTION PRESSURE SUCTION LINE TEMP DISCHARGE PRESSURE DISCHARGE LINE TEMP ENTERING OUTDOOR UNIT AIR TEMP LEAVING OUTDOOR UNIT AIR TEMP INDOOR UNIT ENTERING AIR DB TEMP INDOOR UNIT ENTERING AIR WB TEMP INDOOR UNIT LEAVING AIR DB TEMP INDOOR UNIT LEAVING AIR WB TEMP OUTDOOR UNIT ENTERING WATER TEMP 40RUS ONLY OUTDOOR UNIT LEAVING WATER TEMP 40RUS ONLY INDOOR UNIT ENTERING WATER TEMP 40RUS ONLY INTDOOR UNIT LEAVING WATER TEMP 40RUS ONLY COMPRESSOR AMPS L1 L2 L3 CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES ARE THE SI
18. GHT GLASSES SHOWING OIL LEVEL AT 1 to 1 3 FULL Y N NOTES CUT ALONG DOTTED LINE Copyright 2009 Carrier Corp 7310 W Morris St Indianapolis IN 46231 Printed in Mexico Edition Date 09 09 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Pg CL 2 Catalog No 40RU 03SI Replaces New CUTALONGDOTTEDUINE
19. LEGEND Not required when mated to units 38AP_025 060 TXV Thermostatic Expansion Valve NOTE Component location arrangemet shown for field installation of sight glasses solenoid valves filter driers and TXV sensing bulbs The TXVs and equilizer lines are factory installed Fig 8 Face Split Coil Suction and Liquid Line Piping Typical VAPOR LINE LIQUID LINE CONNECTION SUCTION VAPOR CONNECTION CONDENSATE DRAIN LEGEND CONNECTION TXV Thermostatic Expansion Valve FIRST ON LAST OFF B NOTE The 8 o clock position is shown above VERTICAL INSTALLATION Fig 10 TXV Sensing Bulb Location CONDENSATE DRAIN CONNECTION FIRST ON LAST OFF A HORIZONTAL INSTALLATION Fig 9 Typical Evaporator Coil Connections 40RU 12 Table 2 Factory Installed Nozzle and Distributor Data UNIT COIL TYPE 40RU 25 4 Row 40RU 28 4 Row 40RU 30 4 Row t Feeder tube size is 1 4 in 6 35 mm o 4 D De lt Qty Part No 2 BBIZE 8 GA 2 BBIZE 15 GA 2 BBIZE 15 GA DISTRIBUTOR Qty Part No 2 1135 2 1126 2 1126 NOTE Hot gas bypass applications require field supplied auxiliary side connector ACCESS UNIT HOLE NO 40RUA25 40RUS25 E a a Table 3 Fitting Requirements TYPE Suction Liquid Suction Supply Return Return Supply CONNECTION 13 KUSA y Size in 18 3 16 2 G6 20 3 46 2 C15 24 3 16 2 C17
20. Setting Full Turns Open 3 0 3 0 3 0 FAN DRIVE Pulley Pitch Dia in 11 0 Pulley Bore in Ps Belt No Section B Belt Pitch in o 458 E 438 FAN SPEEDS rpm Factory Setting 752 Range 679 863 682 841 674 831 Max Allowable Speed rpm 1200 1100 1100 Change per 1 2 Turn of Moveable Motor Pulley 15 3 13 1 13 1 Flange m ww MAX FULL TURNS FROM CLOSED POSITION SHAFTS CENTER DISTANCE in AER Par En t Four belts shipped with unit Use correct set of 2 belts sized according to the pully setting Table 9B Medium Static Drive Data 60 Hz English UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 MOTOR DRIVE Motor Pulley Pitch Diameter in 4 3 5 3 4 3 5 3 4 3 5 3 Pulley Factory Setting Full Turns Open 3 0 3 0 3 0 FAN DRIVE Pulley Pitch Dia in 9 4 Pulley Bore in ihe Belt No Section SH Belt Pitch in o M o me FAN SPEEDS rpm Factory Setting 891 Range 798 984 798 984 798 984 Max Allowable Speed rpm 1200 1100 1100 Change per 1 5 Turn of Moveable Motor Pulley 15 3 15 3 15 3 Flange MAX FULL TURNS FROM 6 CLOSED POSITION SHAFTS CENTER DISTANCE in dos se eee t Four belts shipped with unit Use correct set of 2 belts sized according to the pully setting 27 Table 9C High Static Drive Data 60 Hz English 40RUS 25 40RUS 28 40RUS 30 MOTOR DRIVE Motor Pulley Pitch Diameter in 4 3 5 3 Wie s FAN DRIVE Pulley Pitch Dia in 74 86 8 6 Pulley
21. When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING CAUTION and NOTE These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on unit always turn off main power switch to unit and install lockout tag Unit may have more than one power switch A WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment A WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Wear safety glasses
22. and Notes for Tables 10A and 10C LEGEND FACTORY SUPPLIED PRESSURE DROP ENGLISH Bhp Brake Horsepower Input to Fan ESP External Static Pressure UNIT AIRFLOW PRESSURE DROP Cfm in wg NOTES 1 Maximum allowable fan speed for size 25 units is 1200 rpm 40RUA 25 0 12 Maximum allowable fan speed for size 28 and 30 units is 1100 1 A 0 19 rpm ORUS 25 0 26 2 Fan performance is based on deductions for wet coil clean 2 in d filters and unit casing See table at right for factory supplied filter 0 15 pressure drop 40RUA 28 0 22 3 Refer to fan motor and drive tables for additional data 40RUS 28 0 30 0 19 Oed 0 29 40RUS 30 0 40 Legend and Notes for Tables 10B and 10D LEGEND FACTORY SUPPLIED PRESSURE DROP SI ESP External Static Pressure AIRFLOW PRESSURE DROP voir unt a Maximum allowable fan speed for size 25 units is 20 r s Maximum allowable fan speed for size 28 and 30 units is 18 3 r s 40RUA 25 2900 32 2 Fan performance is based on deductions for wet coil clean 40RUS 25 3800 47 51 mm filters and unit casing See table at right for factory sup 4700 64 plied filter pressure drop 3500 Ce 3 Refer to fan motor and drive tables for additional data tee 4700 55 40RUS 28 5900 76 40RUA 30 350 ar 40RUS 30 Se e Copyright 2009 Carrier Corp 7310 W Morris St Indianapolis IN 46231 Printed in Mexico Edition Date 09 09 Catalog No 40RU 03SI Manufacturer reserves the right to change at any time specif
23. baffle plates tight against coil to prevent air bypass Are all panels securely fastened Are all electrical connections correct and tight Also refer to condensing unit instructions before starting a split system A split system start up checklist is provided at the end of these instructions SERVICE Inspection and maintenance should be performed at regular in tervals and should include the following Complete cleaning of cabinet fan wheel cooling coil condensate pan and drain heating coils and return air grille if present Inspection of panels and sealing of unit against air leakage Adjustment of fan motor belt bearings and wheels Cleaning or replacement of filters Testing for cooling heating system leaks Checking of all electrical connections A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on unit always turn off main power switch to unit and install lockout tag Unit may have more than one power switch 21 Most unit service can be performed by removing one or both of the unit s side panels Coil cleaning or removal or insulation cleaning may require removal of a rear top or bottom panel depending on the unit s orientation When service is completed replace unit panels Panels Panels are fastened to unit frame with sheet metal screws Fan and coil compartment mu
24. behind the side access panel see Fig 15 and 16 Wire the thermostat to the 24 v control circuit terminal block located in the side of the fan contactor control box according to Fig 17 or the unit label diagram If the air handler is part of a split system complete the wiring from the condensing unit to the thermostat shown in Fig 17 g g FAN CONTACTOR 24V ee T d BLOCK POWER WIRING i Ls KNockour MW Wi Fig 16 Fan Contactor Box and Terminal Block Cover Removed Typical Table 4 Electrical Data Standard Motors SE FAN MOTOR POWER SUPPLY UNIT V PH Hzt Ini LIMITS Minimum Hp kw oc 208 230 3 60 187 253 5 0 3 73 14 6 12 8 18 3 16 0 30 25 40RUA 25 208 230 3 60 187 253 7 5 5 59 21 4 19 4 26 9 24 3 45 40 40RUS 28 SUO 208 230 3 60 187 253 10 0 7 46 28 2 26 8 35 3 33 5 60 60 40RUA 30 575 3 60 518 632 10 0 7 46 20 See Legend and Notes below Table 5 Electrical Data Alternate Motors VOLTAGE FAN MOTOR POWER SUPPLY UNIT V PH Hzt ini LIMITS Minimum 208 230 3 60 187 253 7 5 5 59 21 4 19 4 26 9 24 3 45 40 40RUA 20 460 3 60 414 506 7 5 5 59 9 7 121 20 aoRUS 25 490390 41450 756 40RUA 28 208 230 3 60 187 253 10 0 7 46 28 2 26 8 35 3 33 5 60 60 40RUA 30 40RUS 30 575 3 60 518 632 10 0 7 46 20 See Legend and Notes below Legend and Notes For Tables 4 and 5 LEGEND FLA Full Load Amps MOCP
25. bow 21 Long Radius Elbow 21 g Nipple 31 5 L 21 g Long Radius Elbow 21 Long Radius Elbow 21 g Nipple 3 L 21 Long Radius Elbow 21 Long Radius Elbow 21 g Nipple 67 5 L 21 a Long Radius Elbow 21 a Long Radius Elbow 21 3 Nipple 117 g L 21 Long Radius Elbow 13 g Street Elbow 13 g Nipple 3 L 13 g Long Radius Elbow 5 g Street Elbow Bis Nipple 73 4 L Bis Long Radius Elbow 5 g Street Elbow 5 5 Nipple 181 2 L 5 a Long Radius Elbow 13 g Nipple 43 46 L 13 Long Radius Elbow 13 Nipple 191 4 L 13 g Long Radius Elbow Chillled Water Piping See Tables 1C and 1D for chilled water connecton sizes For ease in bazing it it recom mended that all internal solder joints be made before unit is placed in final position Knockouts are provided in the unit corner posts for 40RUS re frigerant piping Additional field fabricated access holes are re quired for 40RUS chilled water piping See Fig 7 which lists recommended knockouts and access holes to use for each 40RUS unit size SUBBASE CONDENSATE TRAP To size design and install chilled water piping consult the Carrier System Design manual See Fig 11 for an example of a typical installation Recommended fittings are listed in Table 3 To access 40RUS coil vents and drains remove the unit side panel over the coil header Vent and drain plugs are on the top and bottom of header respectively See the Service section for information on preventing coil freeze up during w
26. eaning guard against splash ing water on electrical components or damaging surrounding area Clean coil baffles as applicable and check for tight fit to be sure air does not bypass coil Cleaning Insulation The insulation contains an im mobilized antimicrobial agent that helps prevent the growth of bacteria and fungi Clean the inner surface of the insulation according to the separate maintenance instructions shipped with the unit Replacing Filters Filters can be removed and in stalled from either side of the unit Install new filters in units that have one fan as follows Remove the side access panel retain screws 2 Remove the filter retainer clip see Fig 25 Remove old filters by lifting and tilting them out of the filter track See Fig 15 and 26 Use the factory supplied filter hook to slide filters within reach for removal The filter hook is shipped inside the unit in the filter track Reverse the procedure to install new filters Koch LA PN A CAUTION UNIT OPERATION HAZARD Failure to follow this caution could cause equipment damage Do not operate unit without air filters Fig 26 Filter Removal Replacement FILTER RETAINE CLIP Fig 25 Remove Filter Retainer Clip 24 Table 8A Fan Motor Data Standard Motor English UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 208 230 3 60 and 460 3 60 Speed rpm 1745 Hp 100 Frame NEMA S215T S
27. ed for more than 2 weeks before installation choose a level dry storage site free from vibration Do not remove plastic wrap or skid from unit until final installation Rigging All 40RU Series units can be rigged by using the shipping skid Units are shipped fully assembled Do not remove shipping skids or protective covering until unit is ready for final placement damage to bottom panels can result Use slings and spreader bars as applicable to lift unit INSTALLATION General Allow 2 ft at front and side of unit for service clearance and airflow For units equipped with an economizer refer to the accessory installation instructions for additional clearance requirements Be sure floor wall or ceiling can support unit weight Tables 1A 1D See Fig 2A and Fig 2B for dimensions Uncrating Move unit as near as possible to final loca tion before removing shipping skid Remove metal banding top skid and plastic wrap Examine unit for shipping damage If shipping damage is evident file claim with transportation agency Remove base skid just prior to actual installation Check nameplate information against available power supply and model number description in Fig 3 NOTE Be sure to remove the styrofoam shipping pad from the thermostatic expansion valve TXV Verify that it has been removed See Fig 1 REMOVE FOAM BLOCK LEGEND TXV Thermostatic Expansion Valve Fig 1 Foam Block Locati
28. eries evaporator coils have a face split design Ensure that lower circuit of coil is first on last off when IMPORTANT Do not bury refrigerant piping underground connected to the condensing unit and or system controls See of the suction line Refrigerant Piping See Tables 1A 1D for refrigerant Pe I pipe connection sizes For ease in brazing it is recommended External TXV equalizer connections are provided and that all internal solder joints be made before unit is placed in factory brazed into the coil suction manifolds final position If suction line must be horizontal clamp bulb to suction line at least 45 degrees above bottom at approximately the 4 o clock or 8 o clock position See Fig 10 4 O OU gt m 8 7 6 5 4 3 2 1 FIELD FABRICATED HOLE POSITION DIMENSIONS in mm UNIT FIELD FABRICATED HOLE DIAMETERS USE HOLE in mm NUMBERS Se ee Mar e a OOA E ET e 1 1 2 3 4 7 4 5 6 7 13 4 44 5 13 4 44 5 13 4 44 5 a 3 0 76 2 6 0 152 5 10 5 266 7 5 6 7 8 21 5 63 5 21 5 63 5 21 5 63 5 21 5 63 5 6 0 152 5 9 625 244 5 13 38 339 9 Fig 7 Refrigerant and Chilled Water Piping Access Holes 40RUA 25 28 30 40RUS 25 40RUS 28 30 17 0 431 8 11 TXV 4 UPPER SENSING SPLIT 2 AIRFLOW SENSING BULB LOWER SPLIT 2 AIRFLOW INDOOR COIL
29. g 13 Drain Pan Slope Adjustment As shipped the unit s condensate drain pan is NOT sloped to wards the drain connection The pan slope must be changed to pitch towards the side of the unit with the drain connection See Fig 13 Loosen the 2 screws next to the drain outlet at both ends of the unit push drain pan down in the slots near the drain connection and up in the slots on the opposite end Retighten screws The pan should have a pitch of at least 4 in over its length toward the drain connection Fan Motors and Drives Motor and drive packages are factory installed in all units The motor and drive packages consist of the following items fan motor 1 adjustable motor pulley 1 fan pulley 2 matched fan belts 4AORUA 25 30 40RUS 25 30 units For instructions on changing fan rotation changing drive speeds and adjusting drives see Pulley and Drive Adjustment in the Service section Power Supply and Wiring Check the unit data plate to ensure that available power supply matches electrical characteristics of the unit Provide a disconnect switch with an integrated lock out feature of size required to provide adequate fan motor starting current See Tables 4 6 for unit electrical data A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not use gas piping as an electrical ground Unit cabinet must have an uninterrupted unbroken elect
30. ge 34 Table 10A 40RU Standard Fan Performance Data 0 0 2 4 in wg External Static Pressure English cont EXTERNAL STATIC PRESSURE in wg Mom Lo 14 se s 259 2 Rpm Bhp Rpm Bhp 1098 5 22 1142 5 67 Rpm Bhp Rpm Bhp Rpm Bhp 1135 6 30 1176 6 84 40RUA 25 40RUA 28 40RUS 28 40RUA 30 40RUS 30 See Legend and Notes on page 34 30 Table 10B 40RU Standard Fan Performance Data 0 600 kPa External Static Pressure SI EXTERNAL STATIC PRESSURE kPa unr amow Ja Im o 26 26 S Lus ww vs kw vs kw vs kw vs kw vs kw vs kw 2 53 40RUA 25 215 3 91 40RUS 25 4 85 6 03 2 68 40RUA 28 3 32 4 23 40RUS 28 533 6 61 3 50 40RUA 30 451 40RUS 30 5 87 7 51 9 49 See Legend and Notes on page 34 Table 10B 40RU Standard Fan Performance Data 0 600 kPa External Static Pressure SI cont EXTERNAL STATIC PRESSURE kPa AIRFLOW UNIT Lis 18 30 3 89 d 40RUA 25 18 92 40RUS 25 I i 19 55 5 67 40RUA 28 40RUS 28 7 26 7 29 40RUA 30 Se 40RUS 30 See Legend and Notes on page 34 31 UNIT 40RUA 25 40RUS 25 40RUA 28 40RUS 28 40RUA 30 40RUS 30 Table 10C 40RU High Capacity Fan Performance Data 0 0 2 4 in wg External Static Pressure English EXTERNAL STATIC PRESSURE in wg AIRFLOW Cfm 1 2 00 o2 04 o
31. h also lists recommended knockouts and access holes to use for Be sure that unit is level and adequately supported Use channels at front and sides of unit for reference points when ene each 40RU unit size Recommended fittings are listed in Refrigerant and Chilled Water Piping Table 3 Access The 40RU Series units come with standard The sensor bulb capillary tubes must be routed from the TXVs knockouts for refrigerant and chilled water piping These inside the unit through one of the piping access holes Clamp knockouts are located on both sides of the unit for installation the TXV sensor bulb on a vertical portion of the suction line flexibility The standard knockouts provide sufficient access to outside the unit See Fig 8 the unit s coils for all 40RUA 25 28 and 30 units RUS 25 28 and 30 units require additional holes which must be field fabracated to accomodiate the piping See Fig 7 for the positions and dimensions of the additional access holes IMPORTANT Never attach the sensor to the suction manifold Do NOT mount the sensor on a trapped portion NOTE Be sure to remove the styrofoam shipping pad from the TXV Verify that it has been removed See Fig 1 required for the RUS units Recommended access hole use is also listed for all units Note that Fig 7 shows the access holes on the control box side of the unit this is the side of the unit with the coil headers so it is used most often for piping access The 40RU S
32. haft Dia in 13 g 575 3 60 Speed rpm 1755 Hp 10 0 Frame NEMA D215T Shaft Dia n Se LEGEND NEMA National Electrical Manufacturers Association Table 8B Fan Motor Data Alternate Motor English UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 208 230 3 60 and 460 3 60 Speed rpm 1745 Hp 103 Frame NEMA S215T Shaft Dia inj tp 575 3 60 Speed rpm 1750 Hp 100 Frame NEMA D215T Shaft Dia in Th LEGEND NEMA National Electrical Manufacturers Association 25 Table 8C Fan Motor Data Standard Motor SI UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 208 230 3 60 and 460 3 60 Speed r s 29 08 Shaft kW 746 Frame NEMA S215T Shaft Dia mm 349 575 3 60 Speed r s 29 25 Shaft kW 746 Frame NEMA S215T Shaft Dia mm 34 9 LEGEND NEMA National Electrical Manufacturers Association Table 8D Fan Motor Data Alternate Motor SI UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 208 230 3 60 and 460 3 60 Speed r s ee Shaft kW 746 Frame NEMA S215T Shaft Dia mm 349 575 3 60 Speed r s 29 17 Shaft kW 746 Frame NEMA D215T Shaft Dia mm 349 LEGEND NEMA National Electrical Manufacturers Association 26 Table 9A Standard Drive Data 60 Hz English UNIT 40RUA 25 40RUA 28 40RUA 30 40RUS 25 40RUS 28 40RUS 30 MOTOR DRIVE Motor Pulley Pitch Diameter in 3 7 4 7 4 3 5 3 4 3 5 3 Pulley Factory
33. ications and designs without notice and without obligations Replaces New 34 START UP CHECKLIST SPLIT SYSTEMS WITH 40RU UNITS PRELIMINARY INFORMATION OUTDOOR MODEL NO INDOOR MODEL NO SERIAL NO SERIAL NO ADDITIONAL ACCESSORIES PRE START UP OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE Y N IF SO WHERE WILL THIS DAMAGE PREVENT UNIT START UP Y N CHECK POWER SUPPLY DOES IT AGREE WITH UNIT Y N HAS THE GROUND WIRE BEEN CONNECTED Y N HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY Y N ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY Y N HAVE COMPRESSOR HOLDDOWN BOLTS BEEN LOOSENED DN CONTROLS ARE THERMOSTAT S AND INDOOR FAN CONTROL WIRING CONNECTIONS MADE AND CHECKED Y N ARE ALL WIRING TERMINALS including main power supply TIGHT YN HAVE OUTDOOR UNIT CRANKCASE HEATERS BEEN ENERGIZED FOR 24 HOURS Y N INDOOR UNIT HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE YN ARE PROPER AIR FILTERS IN PLACE Y N HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT Y N DO THE FAN BELTS HAVE PROPER TENSION Y N PIPING 40RUA HAS FOAM SHIPPING BLOCK BEEN REMOVED FROM THE TXV Thermostatic Expansion Valve Y N ARE LIQUID LINE SOLENOID VALVES LOCATED AT THE INDOOR UNIT COILS AS REQUIRED Y N HAVE LEAK CHECKS BEEN MADE AT COMPRESSORS CONDENSERS INDOOR COILS TXVs Thermostatic Expansion Valves SOLENOID VALV
34. inter DISCONNECT PUMP SUPPLY LINE CAPS FOR BLOWOUT D CAP Fig 11 Typical 40RUS Chilled Water Piping 15 Condensate Drain Install a trapped condensate drain line to unit connection as shown in Fig 12 The unit drain con nection is a PVC stub See Fig 13 Some areas may require an adapter to connect to either galvanized steel or copper pipe For these applications install a field supplied threaded PVC adapter FROM CONDENSATE PAN PLUG PLUG MIN vel a PLUG 76 PLUG EXISTING FLOOR DRAIN SINK OR HOPPER L NOT LESS THAN 18 457 LONG AND TWO SIZES i LARGER THAN WASTE PIPE T TRAP TOSEWER NOTE Dimensions in are in millimeters Fig 12 Condensate Drains NOTE A trap must be installed in the condensate drain line to ensure that the static pressure of fans is balanced with the water column in the drain line and that condensate can drain completely from pan Without a trap air can be drawn up drain line until water level in condensate pan becomes equal to static pressure created by fans preventing complete drainage Conditions will worsen as filters become dirty Install clean out plugs in trap Pitch drain line downward to an open floor drain or sump Provide service clearance around drain line to permit removal of unit panels Observe all local sanitary codes 16 PVC STUB UNIT DRAIN CONNECTION ADJUSTMENT SLOTS BOTH ENDS OF UNIT Fi
35. llar in direction of fan rota tion results in further tightening of collar should setscrew work itself loose FAN SHAFT LOCKING COLLAR FAN SHAFT BEARING FAN PULLEY S BELTS MOTOR PULLEY S MOUNTING BOLTS Individual Fan Wheel Adjustment Loosen the 2 locking bolts holding fan wheel hub to shaft See Fig 20 Position fan wheel in center of the fan housing and tighten locking bolts Clearance between wheel and housing should be the same on both sides Fan Belts Motor mounting plate and motor support angles are slotted to permit both vertical and horizontal adjustment Adjust belt s for correct deflection by loosening motor plate mounting bolts moving motor plate assembly forward or back and retightening bolts Press down on belt with one finger midway between fan and motor pulleys to check deflection The correct deflection is g in 3 2 mm See Fig 22 If complete belt replacement is required during servicing loosen the motor plate mounting bolts Fig 22 move motor plate assembly towards fan pulley and pull belt s off pulleys Reverse the procedure with new bolts and readjust deflection Fan Rotation Correct fan rotation with respect to fan outlet is shown in Fig 23 To reverse the direction of rotation of a 3 phase fan motor reverse any 2 of the power leads Refer to the connection diagram on the inside of motor terminal box cover for proper reversing procedure of single phase motor
36. m Lower Rows Fins m PIPING CONNECTIONS Quantity Size in Chilled Water In Chilled Water Out Steam Coil In MPT Steam Coil Out MPT Hot Water Coil In MPT Hot Water Coil Out MPT Condensate PVC FILTERS Quantity Size mm Access Location STEAM COIL Max Working Pressure kPag at 125 C Total Face Area sq m Rows Fins m HOT WATER COIL Max Working Pressure kPag Total Face Area sq m Rows Fins m Water Volume L m3 LEGEND t Field installed accessory only 310 469 473 102 148 148 2 881 3775 2831 4719 3 73 3 73 29 1 29 1 Enhanced Copper Tubes Aluminum Sine Wave Fins 1 02 0 77 3 591 2 13 g ODM 2 13 g ODM 1 24 1 394 1 24 2 335 52 6 0 052 105 2 457 2 457 4719 5663 3539 5899 4247 7079 5 60 7 46 5 60 7 46 29 1 29 1 29 3 29 3 2999 1 15 1 44 1 15 1 15 3 591 3 591 2 21 s ODM 2 21 s ODM 2 21 3 ODM 2 21 g ODM 1 21 2 UA 1 2 1 2 1 11 4 ODM 1 IDF Throwaway Factory Supplied 4 406 x 508 x 51 4 406 x 610 x 51 4 508 x 610 x 51 4 508 x 635 x 51 Either Side 138 1 39 1 39 1 394 1 394 1034 1 39 1 39 2 493 2 493 54 1 0 054 10 11 12 13 14 15 16 17 18 Dv w A Po o A 1 A 6 0A 0 A 0 Model Type 40RU Carrier Fan Coil Puron R 410A Refrigerant Type of Coil A Standard DX Coil
37. n Tables 1A 1D Chilled Water Coil Freeze Protection Shut off water supply to unit Remove side panel of unit and remove vent and drain plugs in top and bottom of coil header Drain coil and blow out remaining water Reinstall plugs and side panel ADJUSTABLE FLANGES STRAIGHT EDGE MUST BE PARALLEL WITH BELT SETSCREWS gerscnews PULLEYS FIXED FLANGES SINGLE GROOVE TWO GROOVES MOTOR AND FAN SHAFTS MUST BE PARALLEL Fig 24 Fan Pulley Adjustments Alternative freeze protection methods follow Circulate hot water within the water coil s supply main or supplementary space heating Close off supply lines to unit and open a union or field supplied drain valve in the return line After draining as much water as possible from coils add sufficient antifreeze to prevent residual water in the coil from freezing Add a sufficient quantity of non corrosive antifreeze to the entire system to prevent all water within the system from freezing Coil Removal Remove unit panels and corner posts as required Disconnect coil connections and remove fastening screws Remove coil through end or side sections of unit Cleaning Cooling Coil Remove return air filters Remove any heavy dirt that may have accumulated on under side of coil Coil can be cleaned more easily with a stiff brush vacuum cleaner or compressed air when coil is dry If coil is wet or if water is to be used for cl
38. on Accessories Refer to instructions shipped with each accessory for specific information TOP ALTERNATE RETURN AIR INTAKE d D T xi TS ACCESS FOR CONTROLS MOTOR AND BELT 15 1 4 i 1438 21 I al 3 11716 93 1 3 1 8 e 67 10 3 4 19 41 2101 91 174 1 16 401 31 17 6 3 8 1 6 3 8 15 8 coc 461 41 i 461 41 41 3 DUCT FLANGE SE I 1 3 3 8 SEE NOTE 5 AIS 1390 5 ft DUCT FLANGE 1 2 TYP EEN TYP 2 PLACES ALTERNATE m ENTRANCE d i Ce FOR POWER WIRING v o N 4 ALTERNATE DRAIN LOCATION ALTERNATE RETURN AIR j ENTRANCE a INTAKE FOR COIL Oo CONNECTIONS a O o 17 6 1 2 9 469 9 d o 1 Rey l LE 6 3 4 CONDENSATE DRAIN 171 51 3 1 8 6 10 3 4 41 31 19 41 2101 81 k 2 4 3 16 EE 0 1716 31 2260 81 LEFT SIDE FRONT ACCESS FOR CONTROLS LEGEND MOTOR AND BELT TO TYP 25 4 a T TR ke 1 8 DIA POWER ENTRY 22 2 117 2 38 11 i i Hi lis DIA FOR LIQUID CONNECTION 128 1 3 4 DIA FOR SUCTION CONNECTION 4 8 11 44 5 1423 9 vi 3 6 15 16 i o 1 8 DIA
39. on to prevent vibration It is important that this connection be properly fabricated to prevent high air friction losses and air noise RETURN CONNECTION When using return air ductwork route return air duct to the unit s return air inlet near the filter rack using a canvas connection to prevent transmission of unit vibration If the duct blocks off the unit s access panel provide a slip joint in the ductwork to permit removalfor servicing OUTDOOR AIR INLET CONNECTION Connect outdoor air inlet to field installed accessory economizer Refer to Economizer Installation Instructions Return Air Filters Type and size of filters are shown in Tables 1A 1D and are factory supplied and factory installed In all units with 2 fans a filter replacement tool hook is shipped inside the unit for field use when replacing filters See the Service section for instructions on filter element replacement Fig 18 Typical Fan Discharge Connections for Multiple Fan Units 20 DUCT FLANGES Fig 19 Duct Flange Installation START UP Before starting unit check the following and correct as necessary Is unit solidly supported Is fan adjusted for speed and pulley alignment Are pulleys motor and bearings securely mounted Are there any loose parts that will rattle or vibrate Is condensate drain pan pitched for correct drainage Are coil
40. rical ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of electrical wire connected to unit ground lug in control compartment or conduit approved for electrical ground when installed in accordance with NEC National Electrical Code ANSI NFPA 70 latest edition in Canada Canadian Electrical Code CSA Canadian Standards Association C22 1 and local electrical codes A WARNING FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction Do not connect aluminum wire between disconnect switch and condensing unit Use only copper wire See Fig 14 ELECTRIC DISCONNECT No SWITCH COPPER WIRE ONLY Fig 14 Disconnect Switch and Unit Install disconnect switch and power wiring in accordance with all applicable local codes See Fig 15 17 and the unit label diagram Connect power wiring with 1 4 in ring terminal FAN SCROLL FAN CONTACTOR BOX MOTOR AND DRIVE WIRE ACCESS FAN DRIVE CONDENSATE PULLEY CONNECTION HORIZONTAL COIL FILTER TXV BULB ELEMENTS ACCESS REFRIGERANT Pater PIPING ACCESS RETAINER CLIP CONDENSATE DRAIN CONNNECTION VERTICAL LEGEND TXV Thermostatic Expansion Valve Fig 15 Wiring and Service Access Side Panel Removed Fan motors are factory installed on all units Indoor fan contactors are located in the fan contactor box
41. rtically through the top of the unit The unit can also be applied in a horizontal arrangement with return air entering horizontally and the supply air discharging horizontally When applying the unit in a horizontal arrangement ensure the condensate drain pan is located at the bottom center of the unit for adequate condensate disposal See Fig 5 for condensate connections for each unit position Typical positioning and alternate return air locations are shown in Fig 5 Alternate return air locations can be used by moving the unit panel from the alternate return air location to the standard return air location Refer to overhead suspension accessory drawing Fig 6 for preferred suspension technique The unit needs support underneath to prevent sagging IMPORTANT Do NOT attempt to install unit with return air entering top panel of unit Condensate will not drain from unit LEGEND Accessory Line N Ly Alternate Air Intake and Discharge E gt Air Intake and Discharge Note Maintain recommended clearances per Figs 2A 2B Fig 5 Typical Unit Positioning OVERHEAD SUSPENSION ACCESSORY UNIT SIZE 25 HCH REF 7 11 172 2425 71 K D 8 9 1727 REF n z L L t x HE oO 000 d DISCHARGE AIR s Get j 1 e uc s 3
42. s m HOT WATER COIL Max Working Pressure kPag Total Face Area sq m Rows Fins m Water Volume L m3 LEGEND DX Direct Expansion TXV Thermostatic Expansion Valve t Units are shipped without refrigerant charge Field installed accessory only 30 105 482 148 2 457 3775 4119 5663 2831 4719 3539 5899 4247 7079 3 73 5 60 7 46 3 73 5 60 7 46 29 1 29 1 29 1 29 1 29 3 29 3 R 410A 1 59 2 04 2 27 Enhanced Copper Tubes Aluminum Sine Wave Fins 3102 1 85 2 30 2 77 2 2 2 18 20 24 Face 50 50 670 591 591 2 11 g 2 13 g 2 13 g 2 5 g 1 21 5 1 1 2 1 2 1 2 1 11 ODM 1 IDF Throwaway Factory Supplied 4 406 x 508 x 51 4 508 x 610 x 51 4 406 x 610 x 51 4 508 x 635 x 51 Either Side 138 1 24 1 39 1 39 1 394 1 394 1 394 1034 1 24 1 39 1 39 2 335 2 335 2 335 52 6 54 1 0 052 0 054 Table 1C 40RUS Physical Data English Chilled Water Units UNIT 40RUS NOMINAL CAPACITY Tons OPERATING WEIGHT Ib Base Unit Plenum FANS Qty Diam in Nominal Airflow cfm Airflow Range cfm Nominal Motor Hp Standard Motor 208 230 3 60 and 460 3 60 575 3 60 Motor Speed rpm 208 230 3 60 and 460 3 60 575 3 60 CHILLED WATER COIL Max Working Pressure psig Face Area sq ft Upper Face Area sq ft Lower Rows Fins in PIPING CONNECTIONS Quantity Size in Chilled Water In Chilled Water Out Steam Coil In MPT
43. st be sealed tightly after service to prevent air from bypassing the cooling coil Fan Motor Lubrication Fan motor supplied with unit is permanently lubricated and requires no further lubrication Fan Shaft Bearings Size 25 30 units have pillow block bearings Fig 20 that must be lubricated with suitable bearing grease approximately every 3 months See Table 7 for suitable lubricants Table 7 Lubricant Data MANUFACTURER LUBRICANT Mobil Mobilplex EP No 2 Sunoco Prestige 42 Texaco Multifak 2 Texaco Regal AFB 2 Preferred lubricant contains rust and oxidation inhibitors FAN Z WHEEL a HUB Q S BEARING b COLLAR lt D gt q S ES GREASE EET V amp di N FITTING X C A 7 LOCKING S SS gt zl N ei Fig 20 Fan Shatt Bearings and Fan Wheel Typical Centering Fan Wheel If fan and fan shaft assembly are not properly centered blades may scrape against the blower side scroll plate or may create an objectionable whistling noise It may be necessary to adjust individual fan wheels or move en tire fan shaft See the following two sections Fan Shaft Position Adjustment Loosen set screw or locking collar of each fan shaft bearing Slide shaft into correct position and replace locking collar Fig 21 To re place locking collar push collar up against inner face of bear ing Turn collar in direction of fan rotation until tight and tight en setscrew Tightening locking co
44. t 23 Pulley and Drive Adjustment 23 Condensate Drains 23 Return Air Filters 23 Chilled Water Coil Freeze Protection 23 Coil Removal usuy asyay psaq pana 8 papa 23 Cleaning Cooling Coil 23 Cleaning Insulation 23 Replacing Filters 24 START UP CHECKLIST CL 1 CL 2 SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions package Follow all safety codes Wear safety glasses and work gloves Use quenching cloths for brazing operations and have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and appropriate national electrical codes in USA ANSI NFPA70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is important to recognize safety information This is the safety alert symbol N
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